Home / 4,811.11-6,639.36-2,821.70

Finding the Fourth Proportional to 4,811.11, 6,639.36 and 2,821.70

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Solution

The fourth proportional to 4,811.11, 6,639.36 and 2,821.70 is: 3,893.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.11 : 6,639.36 = 2,821.70 : x
  2. Step 2: Convert to fraction form
    4,811.11/6,639.36 = 2,821.70/x
  3. Step 3: Cross multiply
    4,811.11x = 6,639.36 × 2,821.70
  4. Step 4: Simplify right side
    4,811.11x = 18,734,282.11
  5. Step 5: Solve for x
    x = 18,734,282.11/4,811.11
  6. Step 6: Final answer
    x = 3,893.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.